平、斜铁是修造蒸汽车机车时用量较大的零件。其内槽的加工,各厂、段所用设备不尽相同,有的用牛头刨床或龙门刨床,有的用龙门铣床。加工工序也有所不同,有的分两道工序,即有一台机床同时用两把盘铣刀铣槽的两个侧面,由另一台机床用端铣刀加工槽底。我厂则是采用一把三面刃镶齿机夹铣刀,在铣床上一次走刀成形。在流水线上, Flat, diagonal iron is to build steam car locomotive when the larger amount of parts. The processing of its tank, the plant, section of the equipment used are not the same, and some with shaper or planer, and some with gantry milling machine. Processing processes are also different, and some divided into two processes, that is, one machine at the same time with two milling cutter milling two sides of the slot by the end of the machine with a milling cutter bottom. I plant is the use of a three-sided edge trimming machine folder cutter, a knife in the milling process. In the pipeline,